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8 <title>mod_authz_dbm - Apache HTTP Server</title>
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16 <p class="apache">Apache HTTP Server Version 2.3</p>
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22 <div id="preamble"><h1>Apache Module mod_authz_dbm</h1>
24 <p><span>Available Languages: </span><a href="../en/mod/mod_authz_dbm.html" title="English"> en </a> |
25 <a href="../ko/mod/mod_authz_dbm.html" hreflang="ko" rel="alternate" title="Korean"> ko </a></p>
27 <table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Group authorization using DBM files</td></tr>
28 <tr><th><a href="module-dict.html#Status">Status:</a></th><td>Extension</td></tr>
29 <tr><th><a href="module-dict.html#ModuleIdentifier">Module Identifier:</a></th><td>authz_dbm_module</td></tr>
30 <tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_authz_dbm.c</td></tr>
31 <tr><th><a href="module-dict.html#Compatibility">Compatibility:</a></th><td>Available in Apache 2.1 and later</td></tr></table>
34 <p>This module provides authorization capabilities so that
35 authenticated users can be allowed or denied access to portions
36 of the web site by group membership. Similar functionality is
37 provided by <code class="module"><a href="../mod/mod_authz_groupfile.html">mod_authz_groupfile</a></code>.</p>
39 <div id="quickview"><h3 class="directives">Directives</h3>
41 <li><img alt="" src="../images/down.gif" /> <a href="#authdbmgroupfile">AuthDBMGroupFile</a></li>
42 <li><img alt="" src="../images/down.gif" /> <a href="#authzdbmtype">AuthzDBMType</a></li>
46 <li><code class="directive"><a href="../mod/mod_authz_core.html#require">Require</a></code></li>
49 <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
50 <div class="directive-section"><h2><a name="AuthDBMGroupFile" id="AuthDBMGroupFile">AuthDBMGroupFile</a> <a name="authdbmgroupfile" id="authdbmgroupfile">Directive</a></h2>
51 <table class="directive">
52 <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Sets the name of the database file containing the list
53 of user groups for authorization</td></tr>
54 <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>AuthDBMGroupFile <var>file-path</var></code></td></tr>
55 <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>directory, .htaccess</td></tr>
56 <tr><th><a href="directive-dict.html#Override">Override:</a></th><td>AuthConfig</td></tr>
57 <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
58 <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_authz_dbm</td></tr>
60 <p>The <code class="directive">AuthDBMGroupFile</code> directive sets the
61 name of a DBM file containing the list of user groups for user
62 authorization. <var>File-path</var> is the absolute path to the
65 <p>The group file is keyed on the username. The value for a
66 user is a comma-separated list of the groups to which the users
67 belongs. There must be no whitespace within the value, and it
68 must never contain any colons.</p>
70 <div class="warning"><h3>Security</h3>
71 <p>Make sure that the <code class="directive">AuthDBMGroupFile</code> is
72 stored outside the document tree of the web-server. Do
73 <strong>not</strong> put it in the directory that it protects.
74 Otherwise, clients will be able to download the
75 <code class="directive">AuthDBMGroupFile</code> unless otherwise
79 <p>Combining Group and Password DBM files: In some cases it is
80 easier to manage a single database which contains both the
81 password and group details for each user. This simplifies any
82 support programs that need to be written: they now only have to
83 deal with writing to and locking a single DBM file. This can be
84 accomplished by first setting the group and password files to
85 point to the same DBM:</p>
87 <div class="example"><p><code>
88 AuthDBMGroupFile /www/userbase<br />
89 AuthDBMUserFile /www/userbase
92 <p>The key for the single DBM is the username. The value consists
95 <div class="example"><p><code>
96 Encrypted Password : List of Groups [ : (ignored) ]
99 <p>The password section contains the encrypted
100 password as before. This is followed by a colon and the comma
101 separated list of groups. Other data may optionally be left in the
102 DBM file after another colon; it is ignored by the authorization
103 module. This is what www.telescope.org uses for its combined
104 password and group database.</p>
107 <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
108 <div class="directive-section"><h2><a name="AuthzDBMType" id="AuthzDBMType">AuthzDBMType</a> <a name="authzdbmtype" id="authzdbmtype">Directive</a></h2>
109 <table class="directive">
110 <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Sets the type of database file that is used to
111 store list of user groups</td></tr>
112 <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>AuthzDBMType default|SDBM|GDBM|NDBM|DB</code></td></tr>
113 <tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>AuthzDBMType default</code></td></tr>
114 <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>directory, .htaccess</td></tr>
115 <tr><th><a href="directive-dict.html#Override">Override:</a></th><td>AuthConfig</td></tr>
116 <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
117 <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_authz_dbm</td></tr>
119 <p>Sets the type of database file that is used to store the list
121 The default database type is determined at compile time. The
122 availability of other types of database files also depends on
123 <a href="../install.html#dbm">compile-time settings</a>.</p>
125 <p>It is crucial that whatever program you use to create your group
126 files is configured to use the same type of database.</p>
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131 <p><span>Available Languages: </span><a href="../en/mod/mod_authz_dbm.html" title="English"> en </a> |
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134 <p class="apache">Copyright 2008 The Apache Software Foundation.<br />Licensed under the <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a>.</p>
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